The advantages of SEFAC screw/nut system in comparison to hydraulic systems are numerous.

The invention concerns a device for limiting the dynamic or static force applied to a linear electric screwjack with reversible screw/bolt system and for disengaging in translation the screw of the jack.

The invention is applicable to mechanical elements with screw-nut system for ball recycling.

Telescopic system comprised of modules, of which the essential element is a screw (56) and nut (57) system.

The nut body includes internal threads for cooperating with a lead screw of a screw-driven mechanical system.

It comprises a screw and nut arrangement (3), comprising a threaded nut (5) receiving a threaded screw (7).

The transmission system comprises a nut and a screw between which balls are installed.

The invention also relates to a locknut for a screw-nut assembly.

The screw-nut system (6) comprises a screw (20) with a first threaded portion (26) and a first nut (22) with a complementary screw thread engaging with the first threaded portion (26), the first nut (22) being rotationally coupled to the rotor.

The nut engages the screw.

A screw and nut assembly which includes a screw and a flanged nut is positioned adjacent each concavity.

The lead screw assembly generally incorporates a nut incorporating such a nut.

In addition, a screw nut is inserted in the through hole, the screw nut matches to a bolt.

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A facet screw system and method includes an implant assembly having a screw with a removable head, a locking nut, and a collet.